CN100513961C - Hot wind oxygen-enriched sintering equipment and method thereof - Google Patents
Hot wind oxygen-enriched sintering equipment and method thereof Download PDFInfo
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- CN100513961C CN100513961C CNB2007101156426A CN200710115642A CN100513961C CN 100513961 C CN100513961 C CN 100513961C CN B2007101156426 A CNB2007101156426 A CN B2007101156426A CN 200710115642 A CN200710115642 A CN 200710115642A CN 100513961 C CN100513961 C CN 100513961C
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Abstract
A sintering device with hot-air oxygen enrichment and a sintering method with hot-air oxygen enrichment are provided, which belongs to the technology field of sintering production in steel industry. The device comprises a filter equipment, a blower, a cooler, a member module, a suction pump, a separation unit, a nitrogen-rich gas tank, a buffer tank and an oxygen-rich gas tank mutually connected via a gas pipeline in turns. The flow passing through the material layer is heated by the flue gas waste heat introduced in a cooling machine to facilitate the sintering temperature of the upper material layer rising, reduce the temperature difference between the upper and lower layers and improve sinter quality and reduce energy consumption. The introduction of the oxygen-rich air can obviously improve fuel combustion conditions and reinforce the oxidizing atmosphere of material layers, thereby achieving the advantages of improving drum strength and productivity of sinter, reducing fuel consumption and improving sinter metallurgical property, etc. The oxygen-enriched process has simple flow, compact structure, no environmental pollution, fast effect and long service life.
Description
Technical field
The present invention relates to a kind of hot blast oxygen-enriched sintering device and hot blast oxygen-enriched sintering method, belong to steel industry SINTERING PRODUCTION technical field.
Background technology
Oxygen-enriched sintering is supplied with oxygen enrichment exactly in sinter bed, its effect is to accelerate the solid fuel ignition process, activates combustible element and solid-fuelled reactivity in the compound, reduces solid fuel consumption; Reduce FeO content, improve sinter strength, improve yield rate and output, reduce pulverization rate, promote the sintering deposit quality, alleviate environmental pollution, for blast furnace improves pig iron output, reducing coke ratio provides condition, and remarkable economic efficiency and social benefit are arranged, and meets the energy-saving and cost-reducing fundamental state policy of China.
1992, " agglomerates of sintered pellets " magazine published Panzhihua iron and steel research institute " oxygen-enriched sintering test " article, has introduced oxygen-enriched sintering cup test situation, and the oxygen enrichment mode has three kinds of igniting oxygen enrichment, sintering oxygen enrichment, omnidistance oxygen enrichments.The igniting oxygen enrichment is under the coal gas ignition condition, and oxygen is added in the combustion air; The sintering oxygen enrichment then is to overlap a special oxygen enrichment cover in sintering process on sintered cup, and oxygen adds around cover; Omnidistance oxygen enrichment is at igniting and sintering overall process oxygenation all.In nonferrous metallurgical process, replacing air with oxygen enrichment is to strengthen the great technical measures of producing, cut down the consumption of energy, curb environmental pollution, improve technical level, increase economic benefit.External plumbous zinc oxygen-enriched sintering was just tested as far back as the later stage seventies 20th century, and to the later stage eighties, because the transformation of airtight blast furnace has increased the demand to agglomerate, oxygen-enriched sintering begins generally to experimentize and use.The external condition of production shows that the only oxygen concentration of plumbous zinc oxygen-enriched sintering is generally 21.5～24%.
In the iron ore powder sintering process, use oxygen-enriched sintering, particularly industrialness and use, do not see bibliographical information.
Summary of the invention
At the deficiencies in the prior art, the invention provides a kind of reasonable in designly, technology advanced person can improve sinter strength, improves yield rate and output, promotes the sintering deposit quality, alleviates the hot blast oxygen-enriched sintering device and the hot blast oxygen-enriched sintering method of environmental pollution.
A kind of hot blast oxygen-enriched sintering device, comprise filter, air blast, cooler, membrane module, aspiration pump, separator, rich nitrogen pot, surge tank and oxygen enrichment gas tank, connect by gas pipeline successively between filter, air blast, cooler, membrane module, aspiration pump, separator, rich nitrogen pot, surge tank and the oxygen enrichment gas tank.
Described filter is connected with the sintering machine cooler.
Be provided with air gauge and evacuating valve between described membrane module and the aspiration pump.
Described separator is the film oxygen enriching separator.
Described rich nitrogen pot is provided with the nitrogen outlet.
Described oxygen enrichment gas tank is connected with the sintering device handpiece air bells cap.
Utilize above-mentioned hot blast oxygen-enriched sintering device to carry out the method for hot blast oxygen-enriched sintering, concrete grammar is as follows:
1) sintering machine cooler sintering deposit waste heat is sent into air blast by hot air duct by screen pack;
2) after air blast is forced into 0.049MPa with hot-air, send into cooler, air themperature is cooled to≤40 ℃;
3)≤40 ℃ air is sent into membrane module;
4) through membrane module right≤40 ℃ air adsorbs successively, finds time, after the voltage rise, obtain the product gas of oxygen content 25～30%;
5) aspiration pump is with product gas suction separator, separator is separated into oxygen-enriched air and nitrogen-rich air with product gas, nitrogen-rich air enters rich nitrogen pot by the separator bottom and is discharged, and oxygen-enriched air enters surge tank by separator top and rich nitrogen pot top;
6) surge tank is sent oxygen-enriched air into the oxygen enrichment gas tank, oxygen-enriched air is warmed to 120～180 ℃ in the oxygen enrichment gas tank after, enters air bells cap and participates in sintering.
This technology is by introducing waste gas residual heat on the cooler, and heating raises the sintering temperature of the top bed of material by the air-flow of the bed of material, and the temperature difference of dwindling upper and lower interlayer significantly improves the sintering deposit yield and quality, reduces energy resource consumption.The introducing of oxygen-enriched air can significantly improve fuel combustion conditions and strengthen the oxidizing atmosphere of the bed of material, thereby reaches drum strength, the usage factor that improves sintering deposit, reduces fuel consumption simultaneously, improves advantage such as sintering deposit metallurgical performance.The oxygen enriching process flow process is simple, and compact conformation is free from environmental pollution, instant effect, long service life.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Wherein, 1, filter.2, air blast, 3, membrane module, 4, aspiration pump, 5, separator, 6, rich nitrogen pot, 7, surge tank, 8, the oxygen enrichment gas tank, 9, air gauge, 10, evacuating valve, 11, cooler.
The specific embodiment
Embodiment:
Device of the present invention as shown in Figure 1, comprise filter 1, air blast 2, cooler 11, membrane module 3, aspiration pump 4, separator 5, rich nitrogen pot 6, surge tank 7 and oxygen enrichment gas tank 8, connect by gas pipeline successively between filter 1, air blast 2, cooler 11, membrane module 3, aspiration pump 4, separator 5, rich nitrogen pot 6, surge tank 7 and the oxygen enrichment gas tank 8.
Described filter 1 is connected with the sintering machine cooler.
4 of described membrane module 3 and aspiration pump are provided with air gauge 9 and evacuating valve 10.
Described separator 4 is film oxygen enriching separators.
Described rich nitrogen pot 5 is provided with the nitrogen outlet.
Described oxygen enrichment gas tank 8 is connected with the sintering device handpiece air bells cap.
Utilize above-mentioned hot blast oxygen-enriched sintering device to carry out the method for hot blast oxygen-enriched sintering, concrete grammar is as follows:
1) sintering machine cooler sintering deposit waste heat is sent into air blast 2 by hot air duct by screen pack 1;
2) after air blast 2 is forced into 0.049MPa with hot-air, send into cooler 11, air themperature is cooled to≤40 ℃;
3)≤40 ℃ air is sent into membrane module 3;
4) air through 3 pairs≤40 ℃ of membrane modules adsorbs successively, finds time, after the voltage rise, obtains the product gas of oxygen content 25～30%;
5) aspiration pump 4 is with product gas suction separator 5, separator 5 is separated into oxygen-enriched air and nitrogen-rich air with product gas, nitrogen-rich air enters rich nitrogen pot 6 by separator 5 bottoms and is discharged, and oxygen-enriched air enters surge tank 7 by separator 5 tops and rich nitrogen pot 6 tops;
6) surge tank 7 is sent oxygen-enriched air into oxygen enrichment gas tank 8, oxygen-enriched air is warmed to 120～180 ℃ in oxygen enrichment gas tank 8 after, enters air bells cap and participates in sintering.
This technology is by introducing waste gas residual heat on the cooler, and heating makes the sintering temperature of the top bed of material by the air-flow of the bed of material Raise, the temperature difference of dwindling upper and lower interlayer significantly improves Sintering Operation Index, reduces energy resource consumption. Drawing of oxygen-enriched air Enter significantly to improve fuel combustion conditions and strengthen the oxidizing atmosphere of the bed of material, thus reach the drum strength that improves sintering deposit, Usage factor reduces simultaneously fuel consumption, improves the advantages such as Metallurgical Properties of Sinter. The oxygen enriching process flow process is simple, structure Compactness, free from environmental pollution, instant effect, long service life.
Claims (5)
1, a kind of hot blast oxygen-enriched sintering device, it is characterized in that, comprise filter, air blast, cooler, membrane module, aspiration pump, separator, rich nitrogen pot, surge tank and oxygen enrichment gas tank, connect by gas pipeline successively between filter, air blast, cooler, membrane module, aspiration pump, separator, rich nitrogen pot, surge tank and the oxygen enrichment gas tank, filter is connected with the sintering machine cooler, and the oxygen enrichment gas tank is connected with the sintering device handpiece air bells cap.
2, a kind of hot blast oxygen-enriched sintering device as claimed in claim 1 is characterized in that, is provided with air gauge and evacuating valve between described membrane module and the aspiration pump.
3, a kind of hot blast oxygen-enriched sintering device as claimed in claim 1 is characterized in that described separator is the film oxygen enriching separator.
4, a kind of hot blast oxygen-enriched sintering device as claimed in claim 1 is characterized in that described rich nitrogen pot is provided with the nitrogen outlet.
5, a kind ofly utilize hot blast oxygen-enriched sintering device as claimed in claim 1 to carry out the method for hot blast oxygen-enriched sintering, concrete grammar is as follows:
1) hot-air that has waste heat of sintering machine cooler sintering deposit is sent into air blast by hot air duct by screen pack;
2) after air blast is forced into 0.049MPa with hot-air, send into cooler, air themperature is cooled to≤40 ℃;
3) air of temperature≤40 ℃ is sent into membrane module;
4) air of temperature≤40 ℃ is adsorbed successively, find time, after the voltage rise, obtain the product gas of oxygen content 25～30% through membrane module;
5) aspiration pump is with product gas suction separator, separator is separated into oxygen-enriched air and nitrogen-rich air with product gas, nitrogen-rich air enters rich nitrogen pot by the separator bottom and is discharged, and oxygen-enriched air enters surge tank by separator top and rich nitrogen pot top;
6) surge tank is sent oxygen-enriched air into the oxygen enrichment gas tank, oxygen-enriched air is warmed to 120～180 ℃ in the oxygen enrichment gas tank after, enters air bells cap and participates in sintering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2007101156426A CN100513961C (en) | 2007-12-19 | 2007-12-19 | Hot wind oxygen-enriched sintering equipment and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007101156426A CN100513961C (en) | 2007-12-19 | 2007-12-19 | Hot wind oxygen-enriched sintering equipment and method thereof |
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| CN101196372A CN101196372A (en) | 2008-06-11 |
| CN100513961C true CN100513961C (en) | 2009-07-15 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101608255B (en) * | 2008-06-20 | 2012-07-18 | 普莱克斯技术有限公司 | Periodic oxygen-enriched sintering of iron ore |
| CN102072501A (en) * | 2011-01-28 | 2011-05-25 | 鞍山普贝达科技有限公司 | Membrane oxygen-enriched combustion-supporting equipment and industrial furnace employing same |
| CN103983656B (en) * | 2014-05-12 | 2016-07-13 | 莱芜钢铁集团有限公司 | Utilize sintering circular-cooler hot blast oxygen enrichment experimental provision |
| CN112410543A (en) * | 2020-12-07 | 2021-02-26 | 许玉蕊 | Sintering oxygen enrichment device |
| CN113652544B (en) * | 2021-07-29 | 2023-03-28 | 钢铁研究总院 | Low-carbon sintering system and process method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4345939A (en) * | 1979-03-26 | 1982-08-24 | Mannesmann Demag A.G. | Method for providing oxygen enhanced air for use in metallurgical processes |
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2007
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4345939A (en) * | 1979-03-26 | 1982-08-24 | Mannesmann Demag A.G. | Method for providing oxygen enhanced air for use in metallurgical processes |
Non-Patent Citations (4)
| Title |
|---|
| 富氧烧结试验. 郭玉盛.烧结球团，第1992年卷第1期. 1992 |
| 富氧烧结试验. 郭玉盛.烧结球团，第1992年卷第1期. 1992 * |
| 烧结富氧点火生产实践. 李怀林等.烧结球团，第24卷第4 期. 1999 |
| 烧结富氧点火生产实践. 李怀林等.烧结球团，第24卷第4 期. 1999 * |
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